Finding the Fourth Proportional to 121,211.10, 181,924.65 and 71,228.70
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Solution
The fourth proportional to 121,211.10, 181,924.65 and 71,228.70 is: 106,906.52
Step by Step Solution
- Step 1: Write the proportion equation
121,211.10 : 181,924.65 = 71,228.70 : x - Step 2: Convert to fraction form
121,211.10/181,924.65 = 71,228.70/x - Step 3: Cross multiply
121,211.10x = 181,924.65 × 71,228.70 - Step 4: Simplify right side
121,211.10x = 12,958,256,317.46 - Step 5: Solve for x
x = 12,958,256,317.46/121,211.10 - Step 6: Final answer
x = 106,906.52
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.